MTD 340 Thru 390 manual Trouble Shooting Guide, Trouble Possible Causes Corrective Action

SECTION 7: TROUBLE SHOOTING GUIDE

Trouble	Possible Cause(s)	Corrective Action
Engine fails to	Fuel tank empty, or stale fuel.	Fill tank with clean, fresh gasoline. Fuel will not last over
start		thirty days unless a fuel stabilizer is used.
	Throttle control lever not in correct	Move throttle lever to start position.
	starting position (if so equipped).
	Blocked fuel line.	Clean fuel line.
	Dirty aircleaner.	Refer to the engine manual packed with your unit.
	Choke not in ON position.	Move switch to ON position.
	Spark plug wire disconnected.	Connect wire to spark plug.
	Faulty spark plug.	Clean, adjust gap or replace.
	Engine flooded.	Refer to the engine manual packed with your unit.
Engine runs	Unit running on CHOKE.	Move choke lever to OFF position.
erratic	Spark plug wire loose.	Connect and tighten spark plug wire.
	Blocked fuel line or stale fuel.	Clean fuel line; fill tank with clean, fresh gasoline. Fuel will
		not last over thirty days unless a fuel stabilizer is used.
	Vent in gas cap plugged.	Clear vent.
	Water or dirt in fuel system.	Drain fuel tank. Refill with fresh fuel.
	Dirty air cleaner.	Refer to the engine manual packed with your unit.
	Carburetor out of adjustment.	Refer to the engine manual packed with your unit.
Engine over-	Engine oil level low.	Fill crankcase with proper oil.
heats	Dirty air cleaner.	Refer to the engine manual packed with your unit.
	Air flow restricted.	Refer to the engine manual packed with your unit.
	Carburetor not adjusted properly.	Adjust carburetor as instructed in separate engine manual.
Tines do not	Foreign object lodged in tines.	Dislodge foreign object.
engage	Tine clevis pin(s) missing.	Replace tine clevis pin(s).
	Pulley and idler not in correct	Take unit to authorized service dealer.
	adjustment.
	Control cable not adjusted properly.	Adjust control cable (see assembly instructions).
	Belt worn and/or stretched.	Replace belt.

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